Disclosure summary
Improper input validation in Windows Local Security Authority Subsystem Service (LSASS) allows an authorized attacker to deny service over a network.
Source-reported weakness categories
CWE-20
Source-specific records & product guidance
Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.
Microsoft Security Updates (CVRF) · 2025-Sep
Open original source · Updated Sep 09, 2025
Windows Local Security Authority Subsystem Service (LSASS) Denial of Service Vulnerability
Maximum of vendor-reported product scores; products and fixed builds are associations, not a universal affected-version statement.
Microsoft maximum product score: 6.5
| Vendor | Product / association | Version / bounds |
|---|---|---|
| Microsoft update guide | Windows Server 2025 (Server Core installation) | (MSRC status code 3) |
| Microsoft update guide | Windows 11 Version 24H2 for ARM64-based Systems | (MSRC status code 3) |
| Microsoft update guide | Windows 11 Version 24H2 for x64-based Systems | (MSRC status code 3) |
| Microsoft update guide | Windows Server 2025 | (MSRC status code 3) |
Vendor remediation references
- 5065426 · build 10.0.26100.6584 · product IDs 12437, 12389, 12390, 12436
- Vendor guidance · product IDs 12437, 12389, 12390, 12436
- 5065426 · product IDs 12437, 12389, 12390, 12436
- 5065474 · build 10.0.26100.6508 · product IDs 12437, 12390, 12436
- Vendor guidance · product IDs 12437, 12390, 12436
- 5065474 · product IDs 12437, 12389, 12390, 12436
- 5065474 · build 10.0.26100.6508 · product IDs 12389
- Vendor guidance · product IDs 12389
Original records & references
- NIST NVD record
- CVE Program record
- msrc.microsoft.com — Vendor advisory
PUBLISHED 2025-09-09T03:00:00-04:00
MODIFIED 2025-09-09T03:00:00-04:00
INGESTED 2026-10-08T12:45:42-04:00